Evaluation of the enhanced cavitation impact energy using a PVDF transducer with an acrylic resin backing

A transducer using a PVDF (Polyvinylidene Fluoride) film as a pressure sensitive material has been developed and applied to evaluate the cavitation impact energy. However, enhanced cavitation impact used for peening destroys the PVDF film, which is directly exposed to the cavitation impact through a polyimide tape. In the present paper, a newly developed PVDF transducer is proposed, in which a PVDF film with an acrylic resin, which attenuates the burst signal, is put on the backside of a metallic base, where the front surface of the metallic base is exposed to the cavitation impact.

► A new type of transducer can measure severe cavitation impact.
► The transducer used a PVDF (Polyvinylidene Fluoride) film as a sensitive material.
► The PVDF film had an acrylic resin backing.
► The Cavitation impact energy can be evaluated by the transducer.
► The cavitation impact energy was proportional to the material mass loss.